article: Men Xue and Yang Yue are good friends. They are in the same school. They are in Class Two , Grade Seven. Men Xue is from Heze,Shandong. She is eleven years old . Her QQ number is 839922660. Yang Yue is from Dalian. She is twelve years old. Her brother   is Harry. He is a worker  . He is twenty-five (25). His telephone number is 18845036918.
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question: How old is Men Xue?
options: 12. 11. 13. 14.